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Siemens 3RV1952-1AE0 — Motor Protection Circuit Breakers (MPCB)

Siemens 3RV1952-1AE0 SIRIUS undervoltage release, 220-240 V

MPN3RV1952-1AE0

Siemens SIRIUS undervoltage release, 220...240 V AC, 220...250 V DC, for size S00/S0 3RV13 circuit breakers.

Source DocumentedChannel stated on listing & quote
Condition PhotosReal unit photos / video on request
WhatsApp AnswersFast human replies for machine-down parts
Worldwide DispatchDHL/FedEx — transit quoted per order
Independent China distributor & sourcing agent· Listing updated Sep 2026

Specifications

3RV1952-1AE0 — Identification
ParameterValue
SeriesSIRIUS
Product designationundervoltage release

Product details

The Siemens SIRIUS 3RV1952-1AE0 is an undervoltage release for 220...240 V AC and 220...250 V DC, for use with 3RV13 breakers. An undervoltage release is a shunt-trip accessory that automatically opens the breaker if the control voltage falls — a standard requirement for applications where an unexpected restart after a power dip could be hazardous, such as conveyor lines, machine tools, or process pumps. It mounts directly onto the breaker, so no additional DIN-rail space is consumed.

Integration with the breaker

This release clips onto the left side of a SIRIUS 3RV13 size S00 or S0 circuit breaker. No additional wiring is needed beyond the two control-voltage terminals — the mechanical trip linkage is built into the snap-on interface. The breaker's existing screw terminals accept 2x (0.5...1.5 mm²) or 2x (0.75...2.5 mm²) solid or ferruled stranded wire, torqued to 0.8...1.2 N·m.

Frequently asked questions

Where can I buy 3RV1952-1AE0 and how do I get a price?

This part is sourced and quoted to order against an RFQ through independent distribution. Submit an RFQ for current pricing and availability — no stock count or lead-time figure is published here.

What is the closest functional second-source for 3RV1952-1AE0?

There is no direct second-source for this Siemens SIRIUS undervoltage release. The 3RV1011-0GA10 is a motor-protective circuit breaker in the same frame, not a functional substitute — it serves a different protection role. The 3RV1952-1AE0 is the only Siemens accessory that provides undervoltage release for S00/S0 breakers.

Will 3RV1952-1AE0 drop into a panel specified around 3RV1011-0GA10?

Yes, it snaps onto the left side of the 3RV1011-0GA10 breaker without rewiring. The mechanical interface and terminal layout are shared across the SIRIUS S00 frame.

MPN
3RV1952-1AE0